会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明专利
    • Improvements in or relating to the intravenous administration of blood and other transfusions
    • GB559163A
    • 1944-02-07
    • GB993842
    • 1942-07-17
    • EVANS SONS LESCHER & WEBB LTDTHOMAS WILFRED PEARCE
    • A61M5/155
    • 559,163. Blood &c. transfusion apparatus. EVANS SONS LESCHER & WEBB, Ltd., and PEARCE, T. W. July 17, 1942, No. 9938. [Class 81 (ii)] Blood &c. from a container b is administered by hypodermic needles, one of which is passed through the rubber cap v of the container and the other passed into the patient, oxygen &c. under pressure being admitted to the container through tubes s, j, the end j 1 being situated near the discharge end of the container. A gas-head a is attached to the blood &c. container by screw threads and bears upon a rubber &c. gasket e carried by the container. Openings p, q, in the gas-head and in a revoluble sleeve o may be brought into or out of register to control the admission of atmospheric air to the gas-head and hence to the container. The tube j including a filter w, is carried by a bung k in the mouth of the container, the bung forming the seat of a screwed closure member l, m, the manipulation of which regulates the pressure of the oxygen &c. flowing into the container. The closure member l, m may be reversed so that when the shorter portion m is screwed into the container, a gap is left between it and the bung k. The closure member may be hollow and also contain a filter. The blood may originally be filled into the container, from the donor by placing the device on its end u, connecting hypodermic needles between donor and the closure v, opening the gashead to atmosphere and allowing blood to flow under gravity. A carrying handle t is provided. When blood &c. is administered, the oxygen &c. bubbles through the blood, in rising from j 1 to the top of the container, thus continually agitating the blood and preventing separation of the constituents.
    • 8. 发明专利
    • Improvements in or relating to the manufacture of liver extracts
    • GB595111A
    • 1947-11-26
    • GB1710545
    • 1945-07-04
    • EVANS SONS LESCHER & WEBB LTDDOUGLAS RIDINGGEORGE EDWARD SHAW
    • A61K31/00
    • An anti-an mia liver preparation is obtained by subjecting to the action of Papain an aqueous solution prepared from liver, said solution containing the water-soluble constituents of liver, but being free from the water-insoluble constituents. Preferably, minced liver is mixed with cold water acidified to a pH of 5.6, the mixture is heated to coagulate heat-coagulatable material, the aqueous extract is separated and is treated with Papain at a temperature of 60 DEG C. for, say, two hours, and the extract is then boiled to destroy the Papain. The Papain employed may be previously activated with sodium sulphide. The resulting preparation may be dried or concentrated (e.g. in vacuo) or fractionated by the following procedures: (1) precipitation with Reinecke acid and subsequent decomposition of the precipitate; (2) adsorption on charcoal followed by subsequent extraction of the adsorbate with 50-60 per cent alcohol; (3) precipitation by ammonium sulphate; (4) solution in 70-80 per cent alcohol; (5) solution in phenolic solvents such as cresylic acid; (6) rejection of the precipitate produced by the addition of lead acetate; (7) precipitation by phosphotungstic acid and subsequent regeneration of the precipitate. The product as well as the anti-an mia factor contains vitamin B1, nicotinic acid, pyridoxin, pantothenic acid and folic acid. Specification 565,986 is referred to.